The name "Earth" is derived from both English andGerman words, 'eor(th)e/ertha' and 'erde', respectively, which meanground. But, the handle's creator is unknown. One interesting factabout its name: Earth is the only planet that wasn'tnamed after a Greek or Roman god or goddess.
The liquid core makes up 80 percent of the mass of theplanet, mostly comprised of water, methane, and ammonia ice, thoughit only extends to about 20 percent of the radius. The internalheat of Uranus is lower than astronomers wouldexpect.
Pluto was finally discovered in 1930 by ClydeTombaugh at the Lowell Observatory, based on predictions by Lowelland other astronomers. Pluto got its name from 11-year-oldVenetia Burney of Oxford, England, who suggested to her grandfatherthat the new world get its name from the Roman god of theunderworld.
The Romans named the five planets closest to theSun after their most important gods. Astronomers decided tocontinue naming the planets after Roman Gods with one exception -Uranus. Uranus was named after the Greek godof the sky. According to myth, he was the father of Saturnand the grandfather of Jupiter.
The planet is often dubbed an ice giant, since at least80% of its mass is a fluid mix of water, methane and ammonia ice.Unlike the other planets of the solar system, Uranus istilted so far that it essentially orbits the sun on its side, withthe axis of its spin nearly pointing at the star.
Uranus (/ˈj??r?n?s, j??ˈre?n?s/;Ancient Greek Ο?ρανός, Ouranos[oːranós] meaning "sky" or "heaven") was the primalGreek god personifying the sky and one of the Greek primordialdeities. In Ancient Greek literature, Uranus or Father Skywas the son and husband of Gaia, Mother Earth.
The atmosphere of Uranus is composed primarily ofhydrogen and helium. At depth it is significantly enriched involatiles (dubbed "ices") such as water, ammonia and methane. Theopposite is true for the upper atmosphere, which containsvery few gases heavier than hydrogen and helium due to its lowtemperature.
The Latest. More than 30 times as far from the Sun asEarth, Neptune is the only planet in our solar systemnot visible to the naked eye and the first predicted by mathematicsbefore its discovery. In 2011 Neptune completed its first165-year orbit since its discovery in 1846.
Pluto (minor planet designation: 134340Pluto) is a dwarf planet in the Kuiper belt, a ringof bodies beyond Neptune. It was the first Kuiper belt object to bediscovered and is the largest known plutoid (or ice dwarf).Pluto was discovered by Clyde Tombaugh in 1930 as the ninthplanet from the Sun.
Where is Uranus?
RA 2h 3m 32s | Dec +12° 0′ 40″
Neptune is the eighth planet from the Sunand the fourth largest (by diameter). Neptune is smaller indiameter but larger in mass than Uranus.
Sumerian astronomers named the sun, moon and fivevisible planets (Mercury, Venus, Mars, Jupiter and Saturn)after their great gods.
The definitive discovery of the Uranianrings was made by astronomers James L. Elliot, Edward W.Dunham, and Jessica Mink on March 10, 1977, using the KuiperAirborne Observatory, and was serendipitous. They planned to usethe occultation of the star SAO 158687 by Uranus to studythe planet's atmosphere.
